[Python-Dev] file.readinto performance regression in Python 3.2 vs. 2.7?

Michael Foord fuzzyman at voidspace.org.uk
Fri Nov 25 16:50:25 CET 2011

On 25/11/2011 15:48, Paul Moore wrote:
> On 25 November 2011 15:07, Amaury Forgeot d'Arc<amauryfa at gmail.com>  wrote:
>> 2011/11/25 Paul Moore<p.f.moore at gmail.com>
>>> It would be nice to have the optimisation back if it's easy enough to
>>> do so, for quick-and-dirty code, but it is not a good idea to rely on
>>> it (and it's especially unwise to base benchmarks on it working :-))
>> Note that this string optimization hack is still present in Python 3,
>> but it now acts on *unicode* strings, not bytes.
> Ah, yes. That makes sense.

Although for concatenating immutable bytes presumably the same hack 
would be *possible*.

> Paul
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